Tingling face symptoms and conditions

My Doctor put me on prednisone 10mg for inflammation in my neck. I did 5 first day 5 second day 4 fourth day and when it was time for day 3 he took me off my upper body from waist to neck hurt so bad if anyone would touch me, blotchy to touch no visible rash stomach cramping nausea and I described sitting down as if I had a very bad sunburn, hunched over. I called his office and they said doesn't sound like a sided effect to stop taking well that night Thurs. I was in the ER for a what they are calling an "allergic reaction" gave me benadryl and sent me home next day very groggy, body still hurt not stomach and slept all day. Saturday night back at the ER bad headache and neck and face felt tingly very weird after a million test sent home. Sunday felt the same. Monday went to doctor's office with abdominal cramping nausea and tingling face/headache had an scan of head and more test gave me anxiety pills (I think they think I'm nuts now). Tuesday back at his office feeling worse more test everything so far is normal gave me something for headache (it worked!) and sent me to see a specialist to make sure it was not my appendix which it's not. I'm Still having stomach cramps upper stomach above belly button no more headache occasional tingly of face and no appetite having a stomach ultra sound today. I'm just wondering now if anyone has had the same symptoms? Starting to think maybe I am crazy. I wasn't on it very long so I'm sooo confused. I was also told at my 2nd ER trip that they didn't believe I could have an allergic reaction very impossible.